21117056

素因数分解:

$2^7\times {\mathrm{19}}^2\times {\mathrm{457}}^1$

素因数の和:509

約数の個数: 48

約数和(自身を含む): 44496990

約数和(自身を除く): 23379934

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 304, 361, 457, 608, 722, 914, 1216, 1444, 1828, 2432, 2888, 3656, 5776, 7312, 8683, 11552, 14624, 17366, 23104, 29248, 34732, 46208, 58496, 69464, 138928, 164977, 277856, 329954, 555712, 659908, 1111424, 1319816, 2639632, 5279264, 10558528, 21117056]

約数ペア:

[(1, 21117056), (2, 10558528), (4, 5279264), (8, 2639632), (16, 1319816), (19, 1111424), (32, 659908), (38, 555712), (64, 329954), (76, 277856), (128, 164977), (152, 138928), (304, 69464), (361, 58496), (457, 46208), (608, 34732), (722, 29248), (914, 23104), (1216, 17366), (1444, 14624), (1828, 11552), (2432, 8683), (2888, 7312), (3656, 5776)]